Measuring-tool.



No- 798,696. PATENTED SEPT. 5, 1905. O. OSMONSON.

MEASURING TOOL.

APPLICATION FILED APR. 20 1905 Witnesses Inventor.

aycarflamoizsoa,

Attorneys rr no STATES PATENT ()EFFICE.

MEASURING-TOOL.

No. 798,696. Specification of Letters Patent. Patented Sept. 5, 1905 Application filed April 20, 1905. $erial No. 256,525.

lle it known thatl, OsoAR ()suoysox', a citizen of the United States, residing at (ll-and Forks, in the county of Grand Forks and State of North Dakota, have invented a new and useful Measuring-dbl)l, of which the following is a specilication. I

This invention relates to an improved measuring-tool designed especially for the use of carpenters in the framing of rafters and other timbers in the construction of buildings, bridges, and the like; and the object of the invention is to enable such timbers to be easily,

conveniently, and accurately framed without resorting to tedious calculations, the construction of the improved tool being such as to enable the hypotenuse of any right-angled triangle to be immediately ascertained without calculation.

The invention consists, with these ends in view, in the improved construction of a measuring-tool and in the novel arrangement and combination of parts constituting the same, which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred forfn of embodiment of the improved measuring-tom, it being. however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that the right is reserved to any changes, alterations, and modilications to which recourse maybe had within the scope of the invention and without departing from the spirit or sacrilicing the efficiency of the same.

in said drawings, Figure 1 is a perspective view of the improved measuring-tool complete. Fig. 2 is a sideelevation showing the same folded together. Fig. 3 is a perspective detail view of the angle-block employed in connection with the tool for the purpose of adjusting two of its members at right angles to one another. tail views taken, respectively, on the lines a A: and 5 5 in Fig. 1.

Corresponding parts in the several ligures are indicated throughout by similar characters of reference.

The improved tool is composed, essentially, of three members, (designated, respectively, A, B, and C.)

The members A and B are each composed of a bottom member 1 and a top member 2, said bottom and top members being spaced apart at what may be termed their outer l Figs. Aland 5 are sectional deends by spacing-blocks 3. The said bottom and top members l and 2, which consist of relative long narrow strips of suitable dimensions, may be made of wood, metal, or any other suitable material, the top members 2 being provided with longitudinal slots 4:, extending almost through the entire lengths thereof. The inner ends of the members A 3 and B are interla med, as will be clearly seen in Fig. l, and are beveled so as to present acute angles, as at 5, said members being pivotally connected, as by a pin 6, extending through the members 1 l and 2 2 near the extremities thereof. By this construction the members A and B may be folded together at a very acute angle, and the range of elliciency of the implement is thereby greatly increased.

The member U consists of a straight-edge of wood or metal having therein a longitudinal slot 7, said straight-edge being laid out with any suitable measuring-scale, as at 8. The members A and B are likewise provided with suitable scales, as 9 and l0, upon the upper or side faces thereof, or both.

In practice the member 0 is adjusted in the spaces between the bottom and top members of the members A and B and is secured at any desired adjustment by means of bindingscrews 11, extending through the slot 7 in the member (,1 and through the slott in the members A and B, said screws being provided with thumb-nuts 12. The binding-screws 11 being freely slidable in the respective slots when the nuts 12 are loosened, it is obvious that the three members A, B, and C may be adjusted with relation to each other to present the sides of any desired triangle and that they may be secured with relation to each other by simply tightening the nuts. l.he-measuringscales upon the faces of the respective members will instantly indicate the relative lengths of the sides of such triangle, thus enabling all kinds of framing to be done without computation.

For the purpose of enabling the implement to be accurately adjusted with two of its members at right angles to one another a block 13 is provided, said block having two sides 14 15 at right angles to each other and provided at one of said sides with an L-shapcd flange 16, adapted to engage the slot 7 in the member U, upon which it may be clamped securely l by means of a set-screw 1T. \Vhen the block I 13 has been thus secured upon the member 0, i it is only necessary to place one of the members A B in engagement with the side of said block which is at right angles to the side in engagement with the member C and to there secure such member by means of its bindingscrew 12, as will be seen in Fig. 1 of the drawings.

The uses and advantages of this implement will be readily understood by those skilled in the art to which it appertains. Thus, for instance, when the members A and C have been adjusted at right angles to each other the hypotenuse of any desired right-angled triangle may be instantly determined by adjusting the member B to the desired angle.

The construction of the improved implement is simple and inexpensive, and it will be found thoroughly efficient for the purposes indicated.

Having thus described the invention, what is claimed is 1. In a measuring-tool, a pair of arms or members each composed of a bottom and a top member, said bottom and top members being spaced apart at their outer ends and interlapped and pivotally connected at their inner ends.

2. In a measuring-tool, a pair of arms each composed of a bottom and a top member, said top members being longitudinally slotted and said bottom and' top members being spaced apart at their outer ends and interlapped and pivotally connected at their inner ends.

3. In a measuring-tool, a pair of arms each composed of a bottom and a top member, said. bottom and top members being spaced apart at their outer ends and beveled, interlapped and pivotally connected at their inner ends.

4:. In a measuring-tool, a pair of pivotallyconnected arms each including a bottom and a top member spaced apart, and said top members being provided with longitudinal slots; in combination with a longitudinally-slotted third member adjustable in the spaces between the bottom and the top members of the pivoted arms, and means for securing said arms.

and third member in adjusted position.

5. In a measuring-tool, a pair of pivotallyconnected arms each including a bottom and a top member spaced apart and said top members being provided with longitudinal slots, in combination with a longitudinally-slotted third member adjustable in the spaces between the bottom and top members of the pivoted arms, binding-screws extending through the several slots, and thumb nuts upon said screws.

6. In a measuring-tool, a pair of pivotallyconnected arms, in combination with a longitudinally-slotted straigh t-edge adj ustabl y connected with said arms; and a right-angular block having an L-shaped flange adapted to engage the slot in the straight-edge, and a setscrew adapted to bear against the edge of the latter.

7 In a measuring-tool, a pair of pivotallyconnected arms each including a bottom and a top member, said top members being provided with longitudinal slots, in combination with a longitudinally-slotted straight-edge adjustably engaging the spaces between the bottom and top members of the pivoted arms, means for securing the parts together at various adjustments; and a right-angular block having a hook-flange engaging the longitudinal slot of the straight-edge and a set-screw bearing against the edge of the latter.

In testimony that I claim the foregoing as my own I have hereto aifixed my signature in the presence of two witnesses.

OSCAR OSMONSON.

VV'tnesses:

NELS. THOMPSON, H. M. ERICKSON. 

